Blocked isocyanates - Wikipedia
Blocked isocyanates are organic compounds that have their isocyanate functionality chemically blocked to control reactivity. [1] They are the product of an isocyanate moiety (nearly always a di-isocyanate) and a suitable blocking agent.
Blocked isocyanates: from analytical and experimental ...
In this review we aim to provide an introductory guide to blocked isocyanates, through discussion on different examples of blocking groups, along with experimental considerations for their application.
Blocked isocyanates III: Part A. Mechanisms and chemistry
1999年7月1日 · What is a blocked isocyanate? The isocyanate functional group can be “blocked” through one of the several methods. Commonly, one thinks of a blocked isocyanate as one in which the isocyanate group is reacted with an active hydrogen compound. Upon heating in the presence of a nucleophile, product is obtained.
Blocked isocyanates - Wikiwand
Blocked isocyanates are organic compounds that have their isocyanate functionality chemically blocked to control reactivity. [1] They are the product of an isocyanate moiety (nearly always a di-isocyanate) and a suitable blocking agent.
Blocked isocyanates III: Part A. Mechanisms and chemistry
1999年7月1日 · The isocyanate functional group can be “blocked” through one of the several methods. Commonly, one thinks of a blocked isocyanate as one in which the isocyanate group is reacted with an active hydrogen compound. Upon heating in the presence of a nucleophile, product is obtained.
NCO Blocking Agent | Blocked Isocyanates | Cardolite
Blocked isocyanate and blocked polyurethane prepolymer technology enable 1K polyurethane systems with reduced free isocyanates and extended storage stability by minimizing moisture sensitivity of the system.
Blocked Isocyanates and Their Usage in Plastic Coatings ...
2004年8月1日 · Blocked isocyanates are typically formed by the reaction of an isocyanate with either an active hydrogen or methylene compound such as malonic esters (Figure 1). When these blocked products are heated in the presence of a hydroxyl …